GB/T | UNS | AISI/ASTM | JIS | W.Nr |
07Cr17Ni7AL | S17700 | 631,17-7PH | SUS631 | 1.4568 |
chemical composition:
alloys | % | Ni | Cr | Fe | C | Mn | Si | S | Cu | Ai | P |
17-7PH | min | 6.5 | 16 | balance | 0.75 | ||||||
max | 7.5 | 18 | 0.09 | 1 | 1 | 0.03 | 0.5 | 1.5 | 0.035 |
Physical properties
density | 7.65/cm3 |
Melting point | 1415-1450 ℃ |
Mechanical properties of alloys at normal temperature
Heat Treatment Process | Tensile Strength | Yield Strength | Elongation | HRC(HBS) |
Solid melt 1000~1100°C fast cooling | ≤1030 | ≤380 | ≥20 | ≤229 |
565℃ times | ≥1140 | ≥960 | ≥5 | （≥363） |
510℃ time | ≥1230 | ≥1030 | ≥4 | （≥388） |
17-7PH alloy has the following characteristics:
It is a hardened stainless steel with high strength, high hardness, fatigue resistance, good corrosion resistance and die forgeability.
17-7PH application areas:
Used in aerospace, chemical, petrochemical, paper and metal processing industries.